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目的用湿度计测定KCl的溶解度。方法以KCl为模型,采用湿度计测定与饱和溶液呈平衡的空气的相对湿度,并用Pitzer模型计算KCl的溶解度,将计算结果与重量分析法的测定值和文献报道值进行比较。结果湿度计的测定值与重量法的测定值及文献值基本一致。结论由湿度计测定KCl溶解度的方法简便可行。
Objective To determine the solubility of KCl using a hygrometer. Methods KCl was used as a model to measure the relative humidity of air saturated with saturated solution using a hygrometer. The Pitzer model was used to calculate the solubility of KCl. The calculated results were compared with those obtained by gravimetric analysis and literature reports. Results The measured value of the hygrometer is basically the same as the measured value of the gravimetric method and the literature value. Conclusion The method of determining the solubility of KCl by hygrometer is simple and feasible.